Worst air pollution Yakima, today and tomorrow
Today (15 July): Air quality in Yakima is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 42.8/100).
Tomorrow (16 July 2026): Air quality in Yakima is medium. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 41.5/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Yakima's air quality reflects the Yakima Valley's severe topographic enclosure in the eastern Washington Cascades rain shadow, with the surrounding Cascade Range, Rattlesnake Hills, and Ahtanum Ridge creating a natural pollution basin. Vehicle emissions from US-12 and agricultural smoke from the surrounding apple, hop, and wine country burning contribute the primary sources, while winter temperature inversions trap all emissions for extended periods and summer wildfire smoke from the Cascade Mountains represents an increasingly severe seasonal overlay on the existing valley air quality challenge.
Today - 15 July | Pollution peaks at 09:00
AQI:
Medium
42.8/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Fair
30.1/100
O3 (ozone):
Medium
42.8/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.6/100
PM1 (ultrafine particles):
Good
12.9/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
10.7/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
15.0/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.1/100
PM1 (ultrafine particles):
Good
12.2/100
Pollen forecast in Yakima
View pollen forecastFrequently Asked Questions
Is air quality bad in Yakima right now?
On 15 July 2026, overall air quality in Yakima is fair. NO2 is the main pollutant at 30.1/100. Pollution peaks around 9:00 AM (O3: 42.8/100).
Will air quality be worse tomorrow in Yakima?
On 16 July 2026, air quality conditions in Yakima will be better than today, with AQI forecast at medium at 41.5/100. Pollution peaks around 4:00 AM (O3: 41.5/100).
When is air pollution at its worst in Yakima?
Like most US cities, Yakima sees air quality shift from season to season. Typically, spring is often the freshest stretch, sandwiched between winter rain and summer fire season, while August and September wildfire smoke can dominate the season, occasionally driving particulate levels sharply higher for several days. Winter temperature inversions can briefly trap wood-smoke in low-lying valleys, but these episodes are usually short-lived.
Are air quality levels in Yakima based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app